Portable input/output device



FIG. 1 is a top, front perspective view of a portable input/outputdevice;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the portable input/output devicethat form no part of the claimed design.

CLAIM The ornamental design for a portable input/output device, as shownand described.